Difference between revisions of "Squamous metaplasia of the rectum/anus"
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Revision as of 02:05, 16 June 2016
Squamous metaplasia of the anus is a metaplastic change of the columnar epithelium. It can histologically mimic anal intraepithelial neoplasia (AIN), especially. high-grade squamous intraepithelial lesion (HSIL).
Images
ISM - very low mag.
ISM - low mag.
ISM - intermed. mag.
ISM - high mag.
IHC
- p16 -ve
- Usually weak-to-moderate patchy, not full thickness.
- Ki-67 - scattered cells positive.